Make Your Own Metal Pottery Rib

 
A handmade, metal pottery rib.

A handmade, metal pottery rib.

 

Making your own tools is a great way to get exactly what you need, and a metal rib is one of the easiest tools to make. For a DIY metal pottery rib of any shape, all you need is a small sheet of metal and wire snips. My favorite shape is the flat-edged teardrop shape with a point pictured above, but you can make any shape.

To make this DIY metal pottery throwing rib, you will need:

  • 24 or 28 gauge galvanized steel sheet. This thickness has the right mix of hardness and flexibility. You can buy galvanized steel at your local hardware store or click here to shop Amazon for an affordable 12” x 12” sheet.

  • Metal Snips, such as aviation snips. (Shop aviation snips at Amazon)

  • Marker, such as a Sharpie

  • Sandpaper. 3M Pro-Grade sandpaper is my favorite (shop at Amazon)

  • Rib template, use an old rib or make a cardstock template

The galvanized steel is flexible but harder, resulting in a more useful rib that that which comes with a basic pottery tool kit. (Check out our review of the best beginner pottery tools here.) The galvanized steel also stays relatively rust free, if you keep your tools clean and dry.

These homemade ribs were introduced to me many years ago when I was first studying pottery. I can’t imagine using any other rib to get just the perfect curve in a bowl and the pointed side is super handy for cleaning up the foot or adding a decorative notch. I also use these tools to remove the slip from the outside of pots, and to shape the inside of a bowl. They also make great ribs for hand building. I occasionally use wood or plastic ribs for throwing, but this metal rib is my go-to pottery workhorse.

Make a Metal Rib: Step by Step

Step 1:

Gather your materials. You’ll need a piece of 24 or 28 gauge galvanized steel, metal snips, a marker, sandpaper and a template. Links to order materials online are above.

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Here’s a close up of the label on the metal sheet. It’s a 1 foot x 2 foot, 28 gauge sheet of galvanized steel.

Step 2:

Trace the template outline with your marker.

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Step 3:

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Make a rough cut of the rib. It’s easier to make the more exact cuts on a second pass with the snips.

 

Step 4:

Make a second cut to get the exact shape you want. It’s ok to make multiple cuts if you want to alter the shape.

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Step 5:

Sand any burrs or rough edges.

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Step 6:

Congrats! You have a new rib. Time to throw awesome pots.

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Step 7:

Make more ribs! Your friends could all use one. Or make a bunch of different shapes. Small ribs, big ribs, whatever you need.

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What’s your favorite rib? Have you ever made your own tools? Leave a comment below.

The Best Tools for Getting Started in a Pottery or Ceramics Studio

There’s a huge variety of tools for working with clay, but you don’t need everything out there, especially if you are just starting out. There are a few basics that will do 95% or more of studio tasks, and these are the same tools that you’ll use over and over again as you continue to work with clay.

In general, it’s best to pay a bit more for quality, well-built tools that will stand the test of time. But lower-cost options can be fine too, especially if you are just trying pottery for the first time or are on a budget.

This post will cover a tool kit, 3 additional tools, one apron, and one tool bin recommended for beginners. Here’s a quick overview of the recommendations:

Table of Contents

  • Basic Pottery Tool Kit

  • Fettling Knives

  • Clay Shredders / Rasps

  • Scoring tools

  • Aprons

  • Tool Boxes and Bags

Kemper Pottery Tool Kit

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The Kemper "Original" 8-piece Pottery Tool Kit includes the most-used tools for wheel throwing and hand building. All these tools are must haves.

The kit includes:

  • Wooden Rib

  • Sponge

  • Loop tool

  • Ribbon tool

  • Needle tool

  • Wooden knife or modeling tool

  • Metal Rib

  • Wire tool

At $15-20, that’s a great deal! This Kemper Original Tool Kit does cost a bit more than other kits, but that’s because it is made out of higher quality wood and metal. That means the loop tools will stay sharper longer, the wooden knife won’t warp, and the wooden rib will hold up for years of use. It’s worth the extra few bucks. Look for the dark brown wood aka hardwood, and you’ll know that you will soon be working with quality Kemper tools.

Budget Tool Kits

If you are just starting out, there are options to get a tool kit for less than $10. The metal uses is thinner and the wood is “soft” on these kits, so it just doesn’t hold up under the wet, heavy use on a pottery wheel. So these tools won’t last as long, but they’ll definitely last long enough to get you started. And then as they wear out, you can replace them with higher quality tools if you want to get serious.

Here’s a few links to generic tool kits and to the Kemper kit, so that you can compare prices.

A final note on these tool kits: Students ask me about sharpening the loop tools. Yes, you can sharpen these tools with a whetstone or bench grinder. But the metal, even on the Kemper kits, is not designed for sharpening over and over. Expect to be able to sharpen a loop tool 2 or maybe 3 times before the metal gets so thin that it’s unusable. At that point, it’s time to buy a new loop tool. A sharp, relatively new loop tool will result in faster and more even trimming.

Fettling Knife

Kemper Fettling Knife

Kemper Fettling Knife

A fettling knife is something I use every day in the studio. It’s a basic steel knife that is not too sharp, but not exactly dull either. The name comes from the word fettle, which means to clean up rough ends of cast metal or clay.

A fettling knife can be used to cut clay evenly and cleanly, and is a superior option to other knives when working with clay. Some people use box knives or X-acto knives, but those dull quickly and are prone to rusting. You might use an old kitchen knife but usually these are either too thick and dull.

Like the tool kit, it pays to get a higher quality knife. The Kemper knives recommended here have better quality steel that isn’t likely to warp or bend under normal use, a better handle, and most importantly, better glue that will keep these two pieces attached. Trust me, I once ordered cheap knives for an academic studio and after a few months half the knives were bent or the blade had fallen out of the handle. They just weren’t worth it.

My favorite fettling option is the Kemper F97 “hard” fettling knife. It has a 4.5” steel blade, a 3.5” handle, and it is a workhorse. The harder steel knife is less likely to bend while cutting, and it makes a great straight edge for smoothing and finishing work.

The Kemper F96 “soft” fettling knife has the same size and shape as the F97, but is more likely to bend under normal use. Sometimes there is a need to bend your blade a bit, such as for a hard to reach area of a sculpture, so this knife can come in handy.

An interesting option is the Xiem Tools Pottery Knife. A bit smaller than a fettling knife, the Xiem knife is 6” long and has the feel of a small kitchen paring knife.

There are cheaper fettling knife options out there with wooden handles, but I can’t recommend a non-Kemper fettling knife. In my experience these knives are made with inferior metal and are prone to falling apart.

Clay Shredder or Rasp

The Mudtools Clay Shredder

The Mudtools Clay Shredder

A clay shredder or rasp is an awesome tool. Once you have one, you’ll find a bunch of uses for it, including trimming, evening out slab work, cleaning up edges, or adding a bevel. I remember one of my early instructor’s calling these tools “the sculptor’s friend.” They work great on pots too.

There are a variety of options, but our favorite is the Mudtools Shredder. It’s got a comfortable, curved handle that doesn’t take up a lot of room in your toolbox, and the shredder blade is easily removed when you need to replace it. It’s also the easiest style of shaver to clean. If it’s easy to clean, you’ll reach for it first.

For a few bucks less, you can get a similar shredder from Creative Hobbies. The only drawback is that it has a larger handle and the blade is a bit enclosed, making it harder to clean. Otherwise, it’s a great option.

If you want to expand beyond the small curved shredder blade, your best bet is the Surform planer from Stanley. They’ve got a small shaver, similar to the Mudtools, two sizes of flat planes, and a round shaver. I’ve used them all, and they are all great. But, you probably don’t need those bigger shavers until you have bigger projects or are working with plaster molds.

If you do get the Mudtools rasp, or a similar style with the small curved blade, you can get replacement blades such as a 6 pack of replacement curved blades from Stanley. The shredder blade will wear out after use, but it really depends on what type of clay you are using and how clean and relatively rust free you keep your shredder. Just test the blade from time to time and get replacements as needed.

Scoring Tool

The Ateco Decorating Comb. Good for frosting and ceramics.

The Ateco Decorating Comb. Good for frosting and ceramics.

These tools go by a variety of names including serrated rib or scraper, and scoring tool. If you want to go budget, find an old metal fork and it will do the job in a rough kind of way. But it can be nice to have a dedicated tool for this job and I use the serrated ribs over and over until they are dull, and then I buy a new one.

The best option is the Kemper serrated rib, which is available for about $3 at Dick Blick and other sites. It has a small, compact seration that works great for joining clay with the score and slip method. The curve edges allow you to maneuver the tool any way you want to go, allowing you to quickly and effectively add scoring marks to your projects.

Another great option is the Ateco triangular decorating comb. It has bigger grooves, which can be great for adding design texture, or scoring the back of tiles.


A final option is the Xiem retractable scoring tool. It’s super compact, has an innovative design, but it’s not my favorite. The Xiem tool is a bit more work to get open and started. I always reach for the serrated rib first, and so that’s what I’d recommend for beginners too.

Apron

Split-leg cotton apron from Black Stallion

Split-leg cotton apron from Black Stallion

To stay clean in the studio, you can cover up with an extra-large t-shirt or an old button down, but an apron is usually the easiest and most functional option. For functionality at an affordable price, you can’t beat this cotton split-leg green apron by Black Stallion.

Although intended for welding, this split-leg apron is also very functional for wheel throwing. The main advantage is it has an adjustable clip buckle at the neck, and two buckles behind each leg. The split leg has a reinforced joint, but it doesn’t have the doubled-up fabric often found in pottery aprons.

This apron is available in three lengths: 36 inches, 42 inches, and 49 inches. The 36 or 42 will suit most people (A standard kitchen apron is often 30 to 33 inches long.

Cross-back barber style apron from Under NY Sky

Cross-back barber style apron from Under NY Sky

Another interesting apron option that is great for handbuilding is the Nylon Cross-Back Barber Apron from Under NY Sky. It costs a bit more but won’t break the bank and it’s got a great look with lots of function. The nylon is appealing for ease of clean up, and it’s also got a clip at the neck and a short split leg. The apron is available in four colors. It’s not as long as a pottery apron, but if you just need coverage on your torso, it’s great.

For more, visit our full review of pottery and ceramic aprons.

Tool Box

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Once you have a variety of tools, a box or bin will help keep things organized. A large yogurt container or small bag with air and drainage holes can work, but my favorite option is a 10.5” Translucent Art Bin.

This bin is big enough to hold a basic kit of tools, but not so big that it’s hard to store. When closed it can be stored horizontally or vertically and if it gets dirty, the whole thing can be cleaned and rinsed. There’s also a variety of sizes, so you can pick the one that works best for you. If you’d like, you can also easily drill holes in this plastic for a bit of air circulation if you have to put your tools away wet.


If you prefer an upright canvas tote option, the JJring Nylon Artist Tote bag is a great option that comes in 4 different colors. For $14, it’s got a lot of features including 16 external pockets for small tools and a larger inner chamber. Or if you want a neutral / natural fabric color option, go with the Harbor Freight Canvas Riggers bag.

Whichever box or bag option you decide on, keep in mind that open storage will allow your tools to dry and stay rust free.

What tools are your absolute essentials in the studio? Let us know in the comments.

Spectrum Underglaze Cone 6 Test Tiles

Spectrum underglazes are dependable, have great colors, and are economical. I use a few of the Spectrum 500 series, along with a mixture of AMACO Velvet Underglazes, AMACO LUG underglazes. Spectrum has a few colors, such as orange and bright green, that have hues I can’t find in other lines. And they are often waaay cheaper than other underglazes.

Spectrum 500 series underglazes can be color-mixed with other underglazes or slips like paint, and can be applied with a variety of tools including brushes, spray guns, sponges, or really any way you can think to get them to stick. They are also perfect for scraffito, stenciling, marbling, and other decorative techniques.

Spectrum underglazes are available in a variety of sizes, including 2oz, 4oz, and 16oz pints. Expect to pay anywhere from $15 to $20 for a 16oz pint of underglaze, making these some of the most affordable underglazes on the market. The best place to find Spectrum Underglazes are with speciality ceramic suppliers, such as The Ceramic Shop in Philadelphia.

Spectrum 500 series underglazes are designed for cone 05 to cone 6. For best results, test in your kiln first. The following images of Spectrum Underglazes test tiles were fired at Cone 6 in oxidation on a speckled clay body, to illustrate what these colors look like underneath the Glossy Clear and Milky Clear cone 6 mid-range glaze recipes. But they will also work underneath a commercial clear glaze. Try them at high fire too, most colors will stay true. For more information about Spectrum Underglaze, please visit the manufacturer’s site.


Spectrum 500 Series Underglaze Cone 6 Test Tiles

All images show 1, 2, or 3 coats of underglaze painted on a speckled stoneware fired to cone 6 in oxidation. The left side of the tile shows Cone 6 Glossy Clear glaze on top, the middle section is unglazed, and the right side is the underglaze underneath Cone 6 Milky Clear glaze. As commercial underglazes are quite expensive, I like to pair them with economical clear glazes that are mixed from scratch.

Spectrum 513 Mahogany Brown painted in 1, 2, and 3 coats on speckled stoneware and fired to cone 6 in oxidation.

Spectrum 513 Mahogany Brown painted in 1, 2, and 3 coats on speckled stoneware and fired to cone 6 in oxidation.

 
Spectrum 563 Bright Orange painted in 1, 2, and 3 coats on speckled stoneware and fired to cone 6 in oxidation.

Spectrum 563 Bright Orange painted in 1, 2, and 3 coats on speckled stoneware and fired to cone 6 in oxidation.

 
Spectrum 564 Bright Green painted in 1, 2, and 3 coats on speckled stoneware and fired to cone 6 in oxidation.

Spectrum 564 Bright Green painted in 1, 2, and 3 coats on speckled stoneware and fired to cone 6 in oxidation.

 
Spectrum 567 Fire Engine Red painted in 1, 2, and 3 coats on speckled stoneware and fired to cone 6 in oxidation.

Spectrum 567 Fire Engine Red painted in 1, 2, and 3 coats on speckled stoneware and fired to cone 6 in oxidation.

 

About Underglazes

Underglazes are the best way to apply saturated, bright colors to your ceramics. Not quite a slip and not quite a glaze, underglazes contain metallic oxides or mason stains to achieve the desired color, and manufacturers generally mix underglazes with some sort of gum material that helps with brushability and getting the material to stick. That versatility allows them to be painted on leather hard greenware, bisqueware, and they will even stick on top of glaze for a refire.

Do you have a favorite underglaze? Let us know in the comments.

AMACO LUG Underglazes Cone 6 Test Tiles

The Liquid Underglaze (LUG) line from AMACO is an economical, quality option for ceramic underglazes. They can be easily color-mixed like paint with other underglazes or slips, and can be applied with a variety of tools including brushes, spray guns, sponges, or really any way you can think to get them to stick. They are also perfect for scraffito, stenciling, marbling, and other decorative techniques.

LUG underglazes are available in a variety of sizes, including 2oz jars, 16oz pints, and some colors come in gallon jugs. Expect to pay anywhere from $20 to $30 for a 16oz pint of underglaze. Yes, they can be a bit expensive but if anything, they are a bit cheaper than many similar colors in the AMACO Velvet Underglaze line. If you are unsure where to start, a great way to sample colors can be to buy a few 2 oz jars and test them out.

LUG underglazes are designed for cone 06-04 low fire underneath a low fire clear glaze, but most colors stay true at mid-range (cone 5-6) and high fire (cone 8-11). For best results, test in your kiln first. Below, I’ve posted images of LUG Underglazes fired at Cone 6 in oxidation on a speckled clay body, to illustrate what these colors look like underneath our favorite Glossy Clear and Milky Clear cone 6 mid-range glaze recipes. But they will also work great underneath a commercial clear glaze. Try them at high fire too, most colors will stay true.

To make a complete palette of colors, I use a mixture of AMACO Velvet Underglazes and Spectrum 500 series underglazes along with LUG underglazes. The LUG underglazes I’ve tested all stay true to color at cone 6, although some do begin to melt into satin or shiny glazes on their own. For more information about LUG Underglaze, check out AMACO’s site.

AMACO LUG Underglaze Cone 6 Test Tiles

All images show 1, 2, and 3 coats of underglaze painted on a speckled stoneware fired to cone 6 in oxidation. The left side of the tile shows Cone 6 Glossy Clear glaze on top, the middle section is unglazed, and the right side is Cone 6 Milky Clear glaze. As commercial underglazes are quite expensive, I like to pair them with economical clear glazes that are mixed from scratch.

AMACO LUG-1 Black Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6 in oxidation.This is a very dark black that is similar to the AMACO Velvet Underglaze black.

AMACO LUG-1 Black Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6 in oxidation.

This is a very dark black that is similar to the AMACO Velvet Underglaze black.

 
 
AMACO LUG-10 White Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at Cone 6 in oxidation.This is a bright white. To my eye, it is very similar to the Velvet Underglaze white.

AMACO LUG-10 White Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at Cone 6 in oxidation.

This is a bright white. To my eye, it is very similar to the Velvet Underglaze white.

 
 
AMACO LUG-15 Warm Gray Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6 in oxidation.A kitten-gray option for underglaze.

AMACO LUG-15 Warm Gray Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6 in oxidation.

A kitten-gray option for underglaze.

 
 
AMACO LUG-22 Dark Blue Underglaze painted in 1, 2 and 3 coats on speckled stoneware fired to cone 6 in oxidation. At mid-range or higher, this underglaze will turn satin / glossy as shown in the middle unglazed section.This is a deep, saturated blue…

AMACO LUG-22 Dark Blue Underglaze painted in 1, 2 and 3 coats on speckled stoneware fired to cone 6 in oxidation. At mid-range or higher, this underglaze will turn satin / glossy as shown in the middle unglazed section.

This is a deep, saturated blue/almost black that can turn a deep ultramarine under certain clear glazes.

 
 
AMACO LUG-25 Turquoise Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6 in oxidation.This is a great option for a solid, opaque turquoise underglaze.

AMACO LUG-25 Turquoise Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6 in oxidation.

This is a great option for a solid, opaque turquoise underglaze.

 
 
AMACO LUG-31 Mahogany Brown painted in 1, 2, and 3 coats on speckled stoneware fired to cone 6 in oxidation.This is a rich, chocolate brown underglaze.

AMACO LUG-31 Mahogany Brown painted in 1, 2, and 3 coats on speckled stoneware fired to cone 6 in oxidation.

This is a rich, chocolate brown underglaze.

 
 
AMACO LUG-43 Dark Green Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired to cone 6 in oxidation.LUG-43 is an opaque forest green that is similar to a chrome oxide green.

AMACO LUG-43 Dark Green Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired to cone 6 in oxidation.

LUG-43 is an opaque forest green that is similar to a chrome oxide green.

 
 
AMACO LUG-50 Pink Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired to cone 6 in oxidation.This is the best pink underglaze that I have found. It is bright, opaque, and birthday-cake pink.

AMACO LUG-50 Pink Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired to cone 6 in oxidation.

This is the best pink underglaze that I have found. It is bright, opaque, and birthday-cake pink.

 
 
AMACO LUG-61 Bright Yellow Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired to cone 6 in oxidation.This is one of the brightest, most intense yellow underglazes on the market. And for some reason, the LUG Bright Yellow is much mor…

AMACO LUG-61 Bright Yellow Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired to cone 6 in oxidation.

This is one of the brightest, most intense yellow underglazes on the market. And for some reason, the LUG Bright Yellow is much more economical than the similar yellows in the Velvet Underglaze line.

 
 

About Underglazes

Underglazes are the best way to get saturated, bright colors on your ceramics. Whether it is detailed, layered paintings or covering larger areas, underglazes are great for beginners, students, and experienced professionals. Not quite a slip and not quite a glaze, manufacturers generally mix underglazes with some sort of gum material that helps with brushability and getting the material to stick. That versatility allows them to be painted on leather hard greenware, bisqueware, and they will even stick on top of glaze for a refire.

Do you have a favorite underglaze? Let us know in the comments.

AMACO Velvet Underglaze Cone 6 Test Tiles

Velvet Underglazes from AMACO are some of the best, most reliable, and popular commercial underglazes available. They have saturated, bright colors that stay true to color and they can be mixed with other underglazes like paint. They can be applied with a variety of tools including brushes, spray guns, sponges, or really any way you can think to get them to stick. They are also perfect for scraffito, stenciling, marbling, and other decorative techniques.

To get a complete palette of colors, I use a mixture of AMACO Velvet Underglazes, AMACO LUG underglazes, and Spectrum 500 series underglazes. This post will cover Velvet Underglazes and includes Cone 6 test tile images below.

Velvet underglazes are available in a variety of sizes, including 2oz, 16oz, and some colors come in gallon jugs. Expect to pay anywhere from $22 to $45 for a 16oz pint of underglaze. Yes, they can be a bit expensive but there is simply nothing comparable out there. If you are unsure where to start, a great way to sample colors can be to buy a class pack of 2oz jars.

Velvet underglazes are designed for cone 04 low fire underneath a low fire clear glaze, but most colors stay true at mid-range and high fire. For best results, test in your kiln first. The following images of Velvet Underglazes were fired at Cone 6 on a speckled clay body, to illustrate what these colors look like underneath Glossy Clear and Milky Clear cone 6 mid-range glaze recipes. But they will also work great underneath a commercial clear glaze.

As I make more test tiles of different underglazes, this post will be updated. For more information about Velvet Underglaze, check out AMACO’s site.

AMACO Velvet Underglaze Cone 6 Test Tiles

All images show 1, 2, or 3 coats of underglaze painted on a speckled stoneware fired at cone 6. The left side of the tile shows our Cone 6 Glossy Clear glaze on top, the middle section is unglazed, and the right side is our Cone 6 Milky Clear glaze. As commercial underglazes are quite expensive, I like to pair them with our economical clear glazes that are mixed from scratch.

AMACO V-309 Deep Yellow Velvet Underglaze on speckled stoneware fired at cone 6.This is a nice ochre / straw yellow that stays matte at Cone 6.

AMACO V-309 Deep Yellow Velvet Underglaze on speckled stoneware fired at cone 6.

This is a nice ochre / straw yellow that stays matte at Cone 6.

 
 
V-325 Baby Blue Velvet Underglaze on speckled stoneware fired at cone 6.

V-325 Baby Blue Velvet Underglaze on speckled stoneware fired at cone 6.

 
 
AMACO V-326 Medium Blue Velvet Underglaze on speckled stoneware fired at Cone 6.This is an intense blue that stays matte at cone 6. It will turn a deeper blue underneath a clear glaze.

AMACO V-326 Medium Blue Velvet Underglaze on speckled stoneware fired at Cone 6.

This is an intense blue that stays matte at cone 6. It will turn a deeper blue underneath a clear glaze.

 
 
AMACO V-354 Leaf Green Velvet Underglaze with 1, 2, and 3 coats painted over speckled stoneware fired at cone 6.This leaf green turns more of an army / forest green at cone 6. It’s still a nice green, but I wouldn’t call it a leaf green at this temp…

AMACO V-354 Leaf Green Velvet Underglaze with 1, 2, and 3 coats painted over speckled stoneware fired at cone 6.

This leaf green turns more of an army / forest green at cone 6. It’s still a nice green, but I wouldn’t call it a leaf green at this temperature.

 
 
AMACO V-375 Maroon Velvet Underglaze painted in 1, 2, and coats on speckled stoneware fired at cone 6. *NOTE: this underglaze turns frosted white/maroon under our glossy clear.A decent option if you are looking for something on the red side of purpl…

AMACO V-375 Maroon Velvet Underglaze painted in 1, 2, and coats on speckled stoneware fired at cone 6. *NOTE: this underglaze turns frosted white/maroon under our glossy clear.

A decent option if you are looking for something on the red side of purple.

 
 
AMACO V-382 Red Velvet Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6.A great red underglaze, on the deeper side of the red spectrum. Stays matte at cone 6.

AMACO V-382 Red Velvet Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6.

A great red underglaze, on the deeper side of the red spectrum. Stays matte at cone 6.

 
 
AMACO V-387 Bright Red Velvet Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6.A few shades lighter and brighter than V-382, Bright Red is a a great red.

AMACO V-387 Bright Red Velvet Underglaze painted in 1, 2, and 3 coats on speckled stoneware fired at cone 6.

A few shades lighter and brighter than V-382, Bright Red is a a great red.

 
 

About Underglazes

The best way to get bright, saturated colors on your ceramics are with commercial underglazes. Perfect for detail work or to cover large areas, underglazes are perfect for beginners, students, and experienced professionals. Not quite a slip and not quite a glaze, manufacturers generally mix underglazes with some sort of gum material that helps with brushability and getting the material to stick. That versatility allows them to be painted on leather hard greenware, bisqueware, and they will even stick on top of glaze for a refire.

Do you have a favorite underglaze? Please share in the comments.

The Best Heavy Duty Clean Up Sponges

 
A stack of large yellow sponges. Bright yellow are new sponges, the darker sponges are about six months old.

A stack of large yellow sponges. Bright yellow are new sponges, the darker sponges are about six months old.

 

Every art studio needs cleaning, and large yellow sponges are one of the most effective cleanup tools. They can wipe, mop up liquid, and be used over and over again. If you are working with clay, this is a must have tool in the studio. Small sponges, rags, or towels will simply not compete with the large surface area, long life, flexibility, and reusability of these sponges.

The only problem is that most large yellow sponges for sale online are low-quality generics that can disintegrate and fall apart, sometimes within weeks.

The best large sponge I’ve found is the Armaly ProPlus Heavy Duty Grouting and Concrete Sponge. For the past several years, I’ve been using these sponges in a busy community ceramics studio and the sponges will hold up under heavy use for six months or more. There is simply not a comparable sponge on the market and I believe these sponges are worth the slightly extra price, especially when they are being used day after day and don’t need to be replaced as often. I’ve been using sponges like this for throwing on the pottery wheel for almost 20 years and the Armaly sponges are the best I’ve ever used.

Shopping tip: Lowes generally has the best prices for these sponges

Table of Contents

  • Top Pick for Heavy Duty Large Sponges

  • Advantages of Armaly ProPlus Heavy Duty Grout Sponges

  • What you can do with large yellow sponges

  • Other options

  • Wrap-up: The best Heavy Duty Large Yellow Sponges

Top Pick for Heavy Duty Large Sponges

Detail of the pore structure on a new Armaly ProPlus Heavy Duty sponge.

Detail of the pore structure on a new Armaly ProPlus Heavy Duty sponge.

The Armaly ProPlus Heavy Duty Grouting and Concrete Sponge is the top pick for the best large yellow sponge. As of this writing, they typically cost around $15–$22 for a 6 pack of sponges, or they can be purchased individually as well. They cost a bit more than other options, but the exceptional life span of these sponges makes them a solid investment for your studio. Large yellow sponges are typically 7.5 x 5.5 x 2 inches.

 

The Advantages of Armaly ProPlus Heavy Duty Sponges

These sponges just last and do the job you expect them to do in an art studio, such as clean up, light mopping, or removing glaze. If you were using these sponges for grouting or plaster work, you might think of them as semi-disposable. But in a studio, you want a tool that will last and be useful, and these are a versatile option.

One of the best features of these high-quality polyester sponges is their ability to pick up and then easily squeeze out a large volume of water. These heavy duty sponges hold up for any job and can last six months or longer, even in a shared studio such as a busy ceramics studio. In an individual studio, these sponges might even last a year or two or longer with light usage.

To research large sponges, I’ve bought just about every type of large sponge and put them to use in academic and community studios used by one hundred or more students every week. In this environment, sponges receive almost constant use throughout the day. Some of the supposedly “heavy duty” sponges started to break down in a few weeks—these were typically sponges from generic multipacks. The Armaly ProPlus Sponges are the longest-lasting cleanup sponge.

What You Can Do With Large Yellow Sponges

  • Clean up

  • Pottery wheel and throwing clean up

  • Light mopping

  • Glaze clean up on bisqueware

  • Wetting watercolor paper

  • Plaster work

  • Grouting

  • Concrete

  • Tile installation

  • Household cleanup

  • Car and boat washing


 

Other Options

QEP Grouting Sponge

The QEP Grouting, Cleaning and Washing Sponge is another great option for large sponges, and at $10 for a 6 pack, offers an exceptional value. I’ve used these and they do work, they’re just not as good as the Armaly ProPlus. Amazon reviewers also praise the QEP sponges for toughness but quite a few found it to be too tough and didn’t wring out as well. I take a tough but not as absorbent sponge over one that breaks down, so if you are looking to save a few bucks, definitely give the QEP sponges a try.

Creative Hobbies Large Sponges

Another option is the Creative Hobbies Value Pack of 4 Sponges, currently around $9 on Amazon. These cost a bit more per sponge than the QEP, but also offer an exceptional value and should do the job.

These are the three best options for use in a pottery studio. I’ve also ordered every sort of generic bulk pack on Amazon and found those to be a waste of money, especially if they are going to be used intensively for wheel throwing or in a busy studio. Stick to one of these three option and you won’t be disappointed.

Wrap Up: The Best Heavy Duty Large Yellow Sponge

In our research, we’ve found the Armaly ProPlus Heavy Duty Grouting and Concrete Sponge to be the best large yellow sponge on the market. It combines exceptional durability with a relatively soft sponge that will pick up large amounts of water. In short, it will do what you need a big sponge to do and work over and over, lasting six months or more. Sure, it costs a bit more but the long life is worth it.

The QEP Grouting and Creative Hobbies Large Yellow Sponges are also good options that are more affordable. All three work great, we just expect the Armaly ProPlus to have a significantly longer life in the studio.

Click on the links below to shop for multipacks or single sponges.

A Few More Detail Images of the Armaly ProPlus Sponges

What sponges do you use in the studio? Let us know in the comments.

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